\tp{Vliv obsahu esterů kyseliny akrylové na vlastnosti kopolymerů na bázi styrenu připravených emulzní polymerací.}

Ing. Peter Boháčik

Master's thesis

\tp{The Efect of Acrylic Acid Esters Content on Properties of Styrene Based Copolymers Prepared by Emulsion Polymerization}

Abstract:

Táto práca popisuje prípravu a vlastnosti emulzne kopolymerovaných esterov kyseliny akrylovej a styrénu. V teoretickej časti je popis akrylových monomérov, ich reaktivity, mechanizmu emulznej polymerizácie, iniciátorov, aplikácia akrylátových latexov, charakteristika a využitie metódy A4F-MALS. V experimentálnej časti je popis prípravy sád akrylátových latexov s rôznimy pomermi monomérov: styrénu (St), metylakrylátu (MA), etylakrylátu (EA), butylakrylátu (BA), allylmetakrylátu (AMA) a etylénglykoldimetakrylátu (EGDMA). Pripravené latexy boli charakterizované pomocou analytických metód GPC, A4F-MALS, DSC, DLS. Boli pripravené nátery na sklo, plechy a na silikónové podložky. Nátery na skle a na plechoch boli charakterizované pomocou lakovacích skúšok. U náterov pripravených na silikónových podložkách bolo stanovené Tg pomocou TMA, DMA a DSC.

Abstract:

This thesis describes the preparation and properties of emulsion copolymers based on styrene and various acrylic acid esters. The theoretical part deals with the properties and reactivity of acrylic monomers, mechanism of the emulsion polymerization, application of acrylic latexes, their characterization and the utilization of the separation method A4F-MALS. The experimental part describes the preparation of series of latexes based on different ratios of styrene (St), methyl acrylate (MA), ethyl acrylate (EA), butyl acrylate (BA), allyl methacrylate (AMA) and ethylene glycol dimethacrylate (EGDMA). The prepared latexes were studied by analytical methods: GPC, A4F-MALS, DSC, DLS. Coating films were cast on glass and steel panels and silicon foils. Coatings prepared on glass and steel substrates were evaluated by standard coating tests. Films prepared on the silicon foil were tested by means of TMA, DMA and DSC.

Keywords

emulzná polymerizácia, A4F-MALS, distribúcia molekulovej hmotnosti, filmotvorné vlastnosti

Language used: Czech

Date on which the thesis was submitted / produced: 5. 5. 2014

Thesis defence

• Date of defence: 2. 6. 2014
• Supervisor: Ing. Jana Machotová, Ph.D.

University of Pardubice

Faculty of Chemical Technology

Master programme / field:
Chemistry and Technology of Materials / Organic Coatings and Paints